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Proceedings Paper

Two-dimensional damage mapping of a glass-epoxy composite test sample by optical transmission analysis
Author(s): Tanguy Davin; Bruno Serio; Jean-Jacques Hunsinger; Stéphane Lebuffe
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Paper Abstract

Under mechanical stress, the optical transmission coefficient of a translucent composite material changes. In this study, the optical response, defined as transmitted luminous flux function of the stress, is used to characterize the optomechanical behavior. Tensile tests were carried out on composite specimens made of glass fibers and epoxy resin. A visible imaging instrument has been developed to characterize this opto-mechanical response. The used camera has permitted to map the two-dimensional behavior, resulting from the heterogeneous stress field. Monotonic tests have been conducted as well as fatigue tests, to analyze de damage state along the material cycle life. In this study, both the principle and the experimental setup of this contactless method are described.

Paper Details

Date Published: 29 April 2016
PDF: 9 pages
Proc. SPIE 9899, Optical Sensing and Detection IV, 98991N (29 April 2016); doi: 10.1117/12.2227527
Show Author Affiliations
Tanguy Davin, Lab. Energétique Mécanique Electromagnétisme (France)
Bruno Serio, Lab. Energétique Mécanique Electromagnétisme (France)
Jean-Jacques Hunsinger, Franche-Comté Electronique, Mécanique, Thermique et Optique (France)
Stéphane Lebuffe, Univ. d’Angers (France)

Published in SPIE Proceedings Vol. 9899:
Optical Sensing and Detection IV
Francis Berghmans; Anna G. Mignani, Editor(s)

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